Ok so Im trying to understand everything.
First off currently I'm S-Off, on the GM firmware with the JB hboot 2.11. Im running cleam rom Dev edition using the ICS firmware patch. I'm having some battery life issues so the suggestion was made to upgrade my firmware. No heat issues that I can tell and signal and 4G speeds are great though.
Now I don't know why, Im new to all this, but I was thinking I would have to RUU. Instead I just would run the: DOWNLOAD ICS ORIG W/ JB 2.21 HBOOT and that would get me on the new firmware right? What about the new radios and all that though? Or do I not need them?
After that it says something about stock recovery, do I also need to flash that? Keep in mind that I will also be flashing Amon Ra. Do I need to reroot? Im assuming so.
Once all that is done then I will reflash the ROM.
What is the new firmware patch for? I dont get that. Is that to run GM roms on ICS firmware?
I think that covers everything. Sorry about all the questions, Id honestly rather ask some rather then brick my phone.